Of course I don't OWN a droid charge, so I will need to work with someone who does.

introduction
I'm not kidding when I say UnBrickable. Modifying the OM pins means you can boot from USB, UART or MMC. This makes the phone quite UNBRICKABLE. There is nothing you can do software wise to prevent the device from booting into this mode. We are communicating with the unrewritable, efused IROM on the processor. It's the thing that makes the system on a chip into a "system on a chip".I am here now to tell you how to turn your Samsung Droid Charge into a KIT-S5PC110 development board. The KIT-S5PC110 development board is the platform used to develop our phones. There are some differences between this mod and the official development platform. The S5PC110 has a removable internal SDCard and no touchscreen.

Why would you want to do this? When you plug in the battery and connect it to the computer in "off" mode, it will become an S5PC110 board awaiting download of a program to run. This occurs long before anything like software or firmware enters the processor. This is the IROM of the device awaiting commands or a power on signal.

Because it is accepting a memory flash, anything may be put onto the device to perform a boot sequence..... Apple iOS (iPhone4 has the same processor) WP7 (mango supports this processor).

This will be a replacement for JTAG once we are able to make some firmware. How could it possibly be better then JTAG? Let's count the ways....
1. The only part required is a wire.
2. No shipping time.
3. No cost for a box to interface the computer.
4. Permanent.
5. Can be done as a preventive measure.
6. Gives the ability to test new Bootloaders temporarily.
7. Allows development of the entire system.
8. Removes worry about flashing and acts as a backup.

After performing this mod:
Remove the battery, replace the battery, your phone will connect to the computer via USB and await commands. Otherwise it will pretty much act like a Droid Charge. See the Special Instructions section.

Modification

You will need:
1. Get someone who knows what they're doing with a soldering iron. If they don't know what flux is, then they don't know what they're doing. You can also speak to myself(my username @gmail.com) or Connexion2005(aka MobileTechVideos.com)
2. soldering iron - make sure it's sharp, if it's not sharp, then sharpen it, flux it and retin it.
3. flux
4. solder
5. tweezers
6. A relay (possibly- for the wire within to use as a bridge)

performing the modification:
1. tear apart your phone... Make sure to take out your SIM and external SDCard before you do this.
1A. Remove the screws.
1B. Separate the top case from the bottom case
1C. disconnect the display connector and free the camera and button assemblies from the case.
1D. Remove the mainboard

The Proper Way:
2a. Move the xOM5 resistor from the top to the bottom position

--or--

The Easy Way:
2b. Remove the xOM5 resistor and bridge it to one of the resistors next to it.
thanks to Clarkkent434 for the board.

3. reassemble the phone.

Special Instructions

This replaces the battery charging sequence. The normal battery charging sequence can be activated by holding power for 4 seconds.

To turn on the device, and operate in normal mode, you must hold the power button for 5 seconds.

3 button Download mode works as usual, however you must not have the S5PC110 drivers installed on the computer. You can use your custom rom menu option, adb reboot download, or use a terminal to "reboot download". 301Kohm Factory Mode JIGs work as well, but you must press power to bypass the S5PC110 mode.

Plans have been posted. Please discuss and let me know if you performed the modification. I can give you help in getting things running. I hope to get my hands on one of these units to develop the firmware properly.

^^ PM sent, sorry I did not make it to the post office early enough this morning. Thank you for providing the board for analysis. The sacrificial board allows resurrection of all dead boards to follow. It will go back to you on Tuesday.

Please contact myself or Rebellos if you have perfomed this mod... It's not experimental. its tried and true. We just need to make sure the firmware is squared away. Once we have the one-click firmware squared away, JTAG on the Droid Charge is depricated.

Adam, I was interested in performing this mod, but I was curious if the one click restore was working, since my charge is in a hard brick state at the moment. Also the steps mentioned above I assume they are an exclusive or, correct? Either do 2a or 2b?

Adam, I was interested in performing this mod, but I was curious if the one click restore was working, since my charge is in a hard brick state at the moment. Also the steps mentioned above I assume they are an exclusive or, correct? Either do 2a or 2b?

Thanks

You only need to complete 1 of those 2 steps. They're the proper and the alternate methods. Once you complete the mod, get with me on pm. I'll get a heimdall 1 click ready. You need to have a working Linux (preferrably Ubuntu) and verify the lsusb command is returning :1234 for a Samsung device.

Everything should be working fine. I'm 98% confident that we can restore your device within a few minutes on GTalk.

Awesome!
From the pictures, everything looks far too tiny for me to do.
I'll just have to not brick my phone.

I have the skills and the equipment to do this kind of work. I work on um (micron) scale at work with several thousandths of an inch being large. Unfortunately this is my only phone which I cannot replace right now.....but this intrigues me nonetheless.

No, there is no mod for the infuse yet. I came up with the mod for the Captivate, this is second and we've also got the S8500 Bada platforms as well. This will be spreading across all platforms. It works, and its much easier than JTAG.

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